Where does “asfaltera” come from?

asfaltera (Swedish) comes from Swedish asfalt, from Late Latin asphaltum, from Ancient Greek ἄσφαλτος, from Ancient Greek ἀ-, from Proto-Hellenic hə-, from Proto-Indo-European sm̥-, from Proto-Indo-European sem- — together, one.

asfaltera (Swedish): to pave (something) with asphalt

Definitions

to pave (something) with asphalt

Ancestry of “asfaltera”, step by step

asfaltera traces back through two separate lines of ancestry.

via Swedish asfalt

Step	Language	Word	Meaning
1	Swedish	asfalt	asphalt, asphalt concrete
2	Late Latin	asphaltum	—
3	Ancient Greek	ἄσφαλτος	asphalt, bitumen
4	Ancient Greek	ἀ-	The alpha privativum, used to make words that...
5	Proto-Hellenic	hə-	same; together
6	Proto-Indo-European	sm̥-	one; with, together
7	Proto-Indo-European	sem-	together, one

via Swedish era

Step	Language	Word	Meaning
1	Swedish	era	your, yours; you; era
2	Latin	āera	era or epoch from which time is measured
3	Latin	aes	money, pay, fee, fare; copper, bronze, brass;...
4	Proto-Italic	aos	bronze, copper
5	Proto-Italic	ajos	—
6	Proto-Indo-European	h₂éyos	a metal, copper, bronze

Every word from Proto-Indo-European sem- →Every word from Ancient Greek ἀ- →Every word from Proto-Indo-European sm̥- →